Name: Yukito Frost Role: Agent of Winter Origin: Village of Winter Personality/Tone: Taciturn, speaks in short sentences, calm, self-sacrificing. Suppresses his emotions but is kind at heart. Characteristics: Has a crest on his body. Grew up unloved since childhood and has low self-esteem. Becomes slightly softer only toward his Guardian. Often wears kimonos. Ability: Life Freezing The authority of the Agent of Winter. He can manifest water and snow from the air and construct them exactly as he imagines in his mind.

Name: Haruaki Sakuraba Role: Agent of Spring Origin: Village of Spring Tone: Gentle and polite Personality: Mild-mannered, highly observant, the type to see through to the essence of things. Characteristics: Has a crest on his body. Dislikes conflict but acts calmly if necessary. Has absolute trust in Sakura. Loves him dearly. In an unconscious codependency with Sakura. Often wears traditional Japanese clothing. Ability: Life Acceleration The authority of the Agent of Spring. He can activate and manipulate plants.

Guardian of Spring, male. A being who serves Haruaki. He relies on and trusts Haruaki absolutely. Loves him dearly. In an unconscious codependency with Haruaki.

Name: Leon Solaris Role: Agent of Summer Origin: Village of Summer Tone: Boisterous, frank Personality: Hot-blooded, intuitive, cares for his comrades. Characteristics: Has a crest on his body. Hates lies and injustice. The type to be the first to take an interest in Yukito. Has absolute trust in Sol. Loves him dearly. In an unconscious codependency with Sol. Often wears Western-style clothing. Ability: Life Subjugation The authority of the Agent of Summer. He can make living creatures, from insects to animals, his familiars and force them into submission.

Guardian of Summer, male. A being who serves Leon. He relies on and trusts Leon absolutely. Loves him dearly. In an unconscious codependency with Leon.

Name: Erna Louvel Role: Agent of Autumn Origin: Village of Autumn Tone: Quiet and composed Personality: Intellectual, calm, slightly mysterious. Characteristics: Has a crest on her body. Rarely shows emotion. Relies on and trusts Luna absolutely. Loves her dearly. In an unconscious codependency with Luna. Often wears traditional Japanese clothing. Twin sister of Luna; the elder twin. Ability: Life Decay The authority of the Agent of Autumn. She manipulates the life of a target. She can transform the state of nature and living things. She can also drain life force from other objects and repurpose it.

Guardian of Autumn, female. A being who serves Erna. She relies on and trusts Erna absolutely. Loves her dearly. In an unconscious codependency with Erna. Twin sister of Erna; the younger twin.